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Method for treating cobalt-nickel-copper tailings with ammonia nitrogen-containing wastewater

A technology of ammonia nitrogen wastewater and copper tailings, applied in the direction of improving process efficiency, etc., can solve problems such as environmental pollution and waste of resources, and achieve the effects of reducing pollution, reducing ammonia nitrogen content, and major economic benefits

Active Publication Date: 2016-02-24
JINGMEN GEM NEW MATERIAL +1
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Problems solved by technology

[0005] In view of this, the present invention provides a method for treating cobalt-nickel-copper tailings with ammonia nitrogen-containing wastewater, which solves the technical problems of waste of resources and environmental pollution caused by the treatment method of cobalt-nickel-copper waste slag and cobalt-nickel precipitation mother liquor in the prior art

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  • Method for treating cobalt-nickel-copper tailings with ammonia nitrogen-containing wastewater

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Embodiment Construction

[0013] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0014] see figure 1 , figure 1 Shown is a schematic flow chart of the method for treating cobalt-nickel-copper tailings with ammonia-nitrogen-containing wastewater according to the embodiment of the present invention, including the following steps:

[0015] A method for treating cobalt-nickel-copper tailings with ammonia-nitrogen-containing wastewater, comprising the following steps:

[0016] Step S01, prepare a first solution

[0017] Adjust the pH of ammonia nitrogen-containing wastewater to 8-11, add cobalt-nickel-copper tailings, and stir to obtain the first solution;

[0018] Step...

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Abstract

The invention is applicable to the technical field of waste treatment, and provides a method for treating cobalt-nickel-copper tailings with ammonia-nitrogen-containing wastewater, including the steps of preparing a first solution, complexing reaction, recovering cobalt-nickel-copper, and the like. The method for treating cobalt-nickel-copper tailings with ammonia-nitrogen-containing wastewater in the present invention greatly reduces the ammonia-nitrogen content in the ammonia-nitrogen-containing wastewater by using the ammonia-nitrogen-containing wastewater for the treatment of cobalt-nickel-copper waste residue, reduces environmental pollution, and simultaneously makes cobalt-nickel The cobalt-nickel-copper in the copper waste slag is effectively recovered and has great economic benefits; the method of the present invention for treating cobalt-nickel-copper tailings with waste water containing ammonia and nitrogen has simple operation and low cost, and is very suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of waste treatment, and in particular relates to a method for treating cobalt-nickel-copper tailings with ammonia-nitrogen-containing wastewater. Background technique [0002] In cobalt-nickel-copper hydrometallurgy, acid leaching is generally used to dissolve valuable metals such as cobalt, nickel and copper. At the same time, since impurities such as iron and aluminum will also be leached, it is necessary to adjust the pH to 3.5-4.0 with alkali to remove impurities such as iron and aluminum. Due to the incomplete acid dissolution and the loss of cobalt, nickel and copper in the process of impurity removal, the tailings will contain a small amount of valuable metals such as cobalt, nickel and copper. The conventional method of tailings treatment is tailings washing. After slurrying the tailings, adjust the pH to about 3.0 with acid, heat up to 50-70 °C, stir for 1-2 hours, filter under pressure, and then wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/04C22B15/00C22B23/00C22B7/00
CPCY02P10/20
Inventor 苏陶贵王勤何广蓼何显达杨柳
Owner JINGMEN GEM NEW MATERIAL